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arXiv · 2301.12324

Cubic C$_{20}$: An intrinsic superconducting carbon allotrope

Ying Yu·Xun-Wang Yan·Fengjie Ma·Miao Gao·Zhong-Yi Lu
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Abstract

Finding intrinsic carbon superconductor is an interesting topic. Based on density functional first-principles calculations, we first study the phonon-mediated superconductivity in a cubic metallic carbon allotrope, namely sc-C$_{20}$, which has been synthesized in experiment. The electron-phonon coupling is accurately computed with Wannier interpolation method. By solving the Eliashberg equations, we predict that sc-C$_{20}$ is an intrinsic carbon superconductor, without introducing any guest atoms or doping, whose transition temperature is determined to be about 24 K. Our findings enrich the family of carbon-based superconductors.

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Ying Yu, Xun-Wang Yan, Fengjie Ma, Miao Gao, Zhong-Yi Lu. 2023-01-29. Cubic C$_{20}$: An intrinsic superconducting carbon allotrope. https://doi.org/10.35848/1882-0786%2Facdc02

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